Compact wearable dual wideband circularly polarized L-strip fed slotted textile antenna with parasitic elements for ISM band applications

Abstract

This paper presents an L-strip fed compact wearable dual wide band circularly polarized textile antenna (DWCPTA) with a pair of parasitic elements and dual wide band operations at frequencies 2.45 and 5.80 GHz for industrial, scientific and medical (ISM) band applications. The antenna is printed on top of denim (jeans) substrate having dielectric constant 1.7 and thickness of 1.43 mm with wide slot ground plane on back side. The proposed DWCPTA of size 40 × 40 × 1.43 mm3 achieves -10 dB simulation impedance bandwidth of 89.16% (2.3 – 6.0 GHz) and 3-dB axial ratio bandwidth (ARBW) of 47.55% (2.34 – 3.80 GHz) and 12.60% (5.20 – 5.90 GHz) and essentially, low specific absorption rate (SAR) values of 0.8 and 0.95 W/Kg over 10 g of human tissues for wide band operations at frequencies 2.45 and 5.80 GHz respectively. The proposed DWCPTA is designed, fabricated and tested, which shows good agreement between measured and simulated ones.

KEYWORDS:

• Circular polarization
• textile antenna
• parasitic element
• ISM

Acknowledgements

This research was supported by RIG MMMUT Gorakhpur (U.P.) – 273010 (INDIA).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This research was supported by RIG MMMUT Gorakhpur (U.P.) – 273010 (INDIA).

Notes on contributors

Saurabh Singh

Saurabh Singh received the B. Tech degree in Electronics & Communication Engineering from UPTU in 2009 and M. Tech degree in Digital Communication from the AKTU in 2017. In 2017, he was a guest faculty in ECE department of Ambedkar Institute of Technology for Handicapped college, Kanpur. Since 2018, he has been a research scholar in ECE department of Madan Mohan Malviya University of Technology (MMMUT), Gorakhpur, Uttar Pradesh, INDIA. He is the author of 2 book chapter, 5 research paper in international conference and 1 article in peer reviewed journals. His research interest is to design a simple and compact antenna for WBAN applications with good radiation characteristics like as wide bandwidth, wide ARBW, high gain and suitable for human body.

Sudhanshu Verma

Sudhanshu Verma received the M.E. degree in Electronics & Communication Engineering in 2009 from Birla Institute of Technology, Ranchi, India and Ph.D. degree in Electrical Engineering in 2014 from Indian Institute of Technology, Patna, India. He is currently an Assistant Professor with department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India. He has published more than 50 research papers in international conference and 10 research articles in peer reviewed journals. His main interests include analysis and design of microstrip filters, reconfigurable antennas and small antennas for mobile communications, analysis of the interaction between electromagnetic fields and the human body by use of numerical and experimental phantoms and development of conformable and flexible antennas for medical applications like cancer treatment.